4011122221 has 8 divisors (see below), whose sum is σ = 4107542400. Its totient is φ = 3915843360.

The previous prime is 4011122201. The next prime is 4011122249. The reversal of 4011122221 is 1222211104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4011122221 - 2¹¹ = 4011120173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4011122195 and 4011122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4011122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278215 + ... + 292276.

It is an arithmetic number, because the mean of its divisors is an integer number (513442800).

Almost surely, 2^4011122221 is an apocalyptic number.

It is an amenable number.

4011122221 is a deficient number, since it is larger than the sum of its proper divisors (96420179).

4011122221 is an equidigital number, since it uses as much as digits as its factorization.

4011122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570659.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 4011122221 is about 63333.4210429217. The cubic root of 4011122221 is about 1588.8709758503.

Adding to 4011122221 its reverse (1222211104), we get a palindrome (5233333325).

The spelling of 4011122221 in words is "four billion, eleven million, one hundred twenty-two thousand, two hundred twenty-one".